This course is part of the Introduction to Programming with Python and Java Specialization

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Brandon Krakowsky

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Introduction to Programming with Python and Java SpecializationUniversity of Pennsylvania

About this Course

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This course provides a comprehensive look at Java inheritance, including access modifiers and overriding methods.  Students are introduced to abstract classes, and will learn how to read and write to files, use regular expressions for parsing text, and how to leverage complex data structures like collections and maps.  
Additionally, this course offers strategies for catching errors and debugging code, including an overview of Eclipse’s debugging tool.

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Earn a Certificate upon completion

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Course 4 of 4 in the

Introduction to Programming with Python and Java Specialization

Beginner Level

High school or college math.

“Introduction to Java and Object-Oriented Programming” Coursera course.

Approx. 20 hours to complete

English

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What you will learn

Examine the concept of inheritance in object-oriented programming and learn how to extend classes and override methods in a subclass.
Analyze and fix different parts of a Java program using Eclipse's interactive debugger.
Explore different methods for opening, reading, and writing to external files, and deal with errors and exceptions.
Examine advanced techniques for storing and manipulating data in collections, and parse text using regular expressions (or regex).

Skills you will gain

Debugging
Problem Solving
Java Programming
Data Structure
Inheritance

Flexible deadlines

Reset deadlines in accordance to your schedule.

Shareable Certificate

Earn a Certificate upon completion

100% online

Start instantly and learn at your own schedule.

Course 4 of 4 in the

Introduction to Programming with Python and Java Specialization

Beginner Level

High school or college math.

“Introduction to Java and Object-Oriented Programming” Coursera course.

Approx. 20 hours to complete

English

Could your company benefit from training employees on in-demand skills?

Try Coursera for Business

Instructor

Instructor rating

4.57/5 (26 Ratings)

Brandon Krakowsky

Lecturer

School of Engineering and Applied Science

76,680 Learners

7 Courses

Offered by

University of Pennsylvania

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This course is related to the 100% online Master of Computer and Information Technology from University of Pennsylvania. It will provide you with a preview of the topics, materials and instructors so you can decide if the full online degree program is right for you.

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Syllabus - What you will learn from this course

Week1

Week 1

5 hours to complete

Module 1 : Inheritance, Polymorphism Using Overriding, & Access Modifiers

We’ll start this module by talking about inheritance, a core concept in object-oriented programming. It’s the mechanism by which one class inherits the fields and methods of another class. Then we’ll learn about another aspect of polymorphism, overriding, which is creating a method in a subclass having the same signature as a method in a superclass. In particular, we’ll look at overriding the toString method for printing your objects and the equals method for comparing your objects, especially as it relates to unit testing. Finally, how you can restrict scope in a program by using modifiers to control access to variables, methods, and classes.

5 hours to complete

19 videos (Total 76 min), 6 readings, 3 quizzes

19 videos

What to expect from this Course1mAbout the Instructor : Brandon Krakowsky 1mHow to submit assignments in Codio6mModule Introduction57sSuperclasses and subclasses1mA review of method signatures54sHow to override a method1mWhy override a method?44sOverriding toString1mA review of overriding equals1mOverriding equals for JUnit tests7mOverriding constructors1mCalling an overridden method4mWhy call an overridden method?18sRestricting scope1mPublic vs. protected vs. default vs. private28sWhich access modifier should I use?34sGetters & setters and encapsulation1mCoding Demonstration : Animals management project39m

6 readings

Course Layout & Syllabus10mTips to succeed in this course10mNavigating Assignments using Codio10mModule 1 Resources (DOWNLOAD RELEVANT CODE AND/OR DATA FILES FOR THIS MODULE HERE)10mHow to require @Override in Eclipse3mSummary : Overloading vs. Overriding2m

2 practice exercises

Quiz 1: Inheritance & Polymorphism - Overriding16mQuiz 2 : Access Modifiers16m

Week2

Week 2

5 hours to complete

Module 2 : Abstract Classes & Debugging

Did you know you can declare a method without defining it? It’s like giving a method a name, and even parameters and a return type, with no code in the body. These are called abstract methods. To define abstract methods, we’ll learn how to create abstract classes. With these new concepts and structures, we’ll continue to expand our Java knowledge and develop our programming skills. We’ll also learn how to better debug our programs by running them interactively using Eclipse’s Debugger. This will allow us to watch the source code and the variables, during execution.

5 hours to complete

14 videos (Total 97 min), 6 readings, 3 quizzes

14 videos

Module Introduction58sAbstract methods25sDeclaring abstract classes23sExtending abstract classes35sCombining abstract & non-abstract methods46sWhy have abstract classes?33sCommon syntax errors with subclasses1mPossible solutions to the syntax problem41sSolution to syntax problem using abstract class36sCode Along : Pet project32mWhat is debugging?23sDebugging support in Eclipse17sCoding Demonstration : Debugging Person class - IndexOutOfBoundsException, & NullPointerException11mCoding Demonstration : Debugging syllable counter - Using Step Into, Step Over, & Step Return45m

6 readings

Module 2 Resources (DOWNLOAD RELEVANT CODE AND/OR DATA FILES FOR THIS MODULE HERE)10mSetting breakpoints3mStarting the debugger3mControlling program execution5mEvaluating variables in the debugger5mReturning to the Java perspective1m

2 practice exercises

Quiz 3 : Abstract Classes 14mQuiz 4 : More with Abstract Classes & Debugging16m

Week3

Week 3

6 hours to complete

Module 3 : File I/O & Exceptions

There are multiple ways of loading and storing data in Java. Information can be stored and manipulated in different kinds of data structures. But data can also be stored in external files and then loaded into Java. In this module, we'll see how Java can communicate with the outside world by opening, reading from, and writing to, external files. This means of communication known as I/O or input/output, is extremely powerful with an overwhelming number of options. Any given I/O is not particularly difficult, but the difficulty lies in finding your way through the maze of possibilities. This module will help guide you through some of the different ways you can interact with external files. In addition, it will demonstrate methods you can use to handle errors and exceptions that may arise in your Java programs. In particular, when you're dealing with files.

6 hours to complete

18 videos (Total 51 min), 3 readings, 3 quizzes

18 videos

Module Introduction1mWhy Java I/O is difficult16sStreams33sHow to do I/O15sOpening & reading a file, using FileReader & BufferedReader1mOpening & reading a file, using Scanner1mFile writing, using FileWriter & PrintWriter59sFile writing, using FileWriter & BufferedWriter 57sFile types35sErrors vs. exceptions21sWhat to do about errors & exceptions22sDealing with exceptions27sThe try-catch statement32s'finally'42sTwo ways to deal with exceptions1mUsing Scanner, & FileNotFoundException12mUsing FileReader & BufferedReader, & FileNotFoundException, IOException19mUsing FileWriter & PrintWriter, & IOException7m

3 readings

Module 3 Resources (DOWNLOAD RELEVANT CODE AND/OR DATA FILES FOR THIS MODULE HERE)10mDifferent kinds of built-in exceptions1mDifferent kinds of built-in errors1m

2 practice exercises

Quiz 5 : File I/O16mQuiz 6 : More with File I/O & Exceptions14m

Week4

Week 4

6 hours to complete

Module 4 : Collections, Maps, & Regular Expressions

In this module, we're going to look at some advanced techniques for storing and manipulating data in collections, which are structured groups of objects. Specifically, we'll learn how to leverage Java's collections framework, which is a unified architecture for representing and manipulating different kinds of collections. We already have experience working with one type of collection in particular, and that's the ArrayList. We'll also learn how to leverage maps, which are dictionaries that associate keys with values. This module will also provide an overview of some advanced techniques for parsing text. In particular, we'll learn how to use regular expressions or regex, which are special sequences of characters that describe patterns used for searching, editing, and manipulating text and data.

6 hours to complete

21 videos (Total 81 min), 3 readings, 3 quizzes

21 videos

Module Introduction1mAbout the Collections Framework55sTypes of collections & “collection-like” things (maps)43sMethods in the collection interface56sImplementations34sList interface45sDeque interface51sSet interface14sMap interface33sGeneral rules for selecting an implementation52sIterator1mCoding Demonstration : Remove range from a list using an Iterator7mCoding Demonstration : Add stars to a list using ArrayList6mCoding Demonstration : Count words using a HashMap6mCoding Demonstration : Count unique words using a HashSet5mCoding Demonstration : Set food toppings using a HashMap6mWhat is a regular expression?29sCoding Demonstration : Split a String using str.split()15mCoding Demonstration : Replace all with a pattern using str.replaceAll()3mCoding Demonstration : Get parts of a phone number using groups and character classes15mCoding Demonstration : Replace an area code using str.replaceFirst()4m

3 readings

Module 4 Resources (DOWNLOAD RELEVANT CODE AND/OR DATA FILES FOR THIS MODULE HERE)10mSorting & searching collections2mArrays class1m

2 practice exercises

Quiz 7 : Collections/Maps14mQuiz 8 : More with Collections/Maps & Regular Expressions8m

Reviews

4.7

15 reviews

5 stars
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4 stars
15.09%
1 star
3.77%

TOP REVIEWS FROM INHERITANCE AND DATA STRUCTURES IN JAVA

by DAApr 8, 2021

Cool course! Main concepts explained and requires to do some homework over google to complete assignments!

by SKFeb 19, 2021

excellent instructor, wonderful introduction to object oriented programming and Java

by YJApr 28, 2021

The lectures are good! However, some descriptions in assignments are not clear.

by HSDec 3, 2021

This course suits everyone who wants to start learning programming. The assignments are really challenging but interesting.

View all reviews

About the Introduction to Programming with Python and Java Specialization

This Specialization starts out by teaching basic concepts in Python and ramps up to more complex subjects such as object-oriented programming and data structures in Java. By the time learners complete this series of four courses, they will be able to write fully-functional programs in both Python and Java, two of the most well-known and frequently used programming languages in the world today.

Introduction to Programming with Python and Java is for students and professionals who have minimal or no prior programming exposure. It’s for motivated learners who have experience with rigorous coursework, and are looking to gain a competitive edge in advancing their career. It’s for folks who are thinking about applying to the University of Pennsylvania’s online Master of Computer and Information Technology degree and want to sample some of the lecture videos and content from the first course in the program. We hope this Specialization is for you. Topics in this Specialization include language syntax, style, programming techniques, and coding conventions. Learn about best practices and good code design, code testing and test-driven development, code debugging, code and program documentation, and computational thinking.

Frequently Asked Questions

When will I have access to the lectures and assignments?
Access to lectures and assignments depends on your type of enrollment. If you take a course in audit mode, you will be able to see most course materials for free. To access graded assignments and to earn a Certificate, you will need to purchase the Certificate experience, during or after your audit. If you don't see the audit option:
The course may not offer an audit option. You can try a Free Trial instead, or apply for Financial Aid.
The course may offer 'Full Course, No Certificate' instead. This option lets you see all course materials, submit required assessments, and get a final grade. This also means that you will not be able to purchase a Certificate experience.
What will I get if I subscribe to this Specialization?
When you enroll in the course, you get access to all of the courses in the Specialization, and you earn a certificate when you complete the work. Your electronic Certificate will be added to your Accomplishments page - from there, you can print your Certificate or add it to your LinkedIn profile. If you only want to read and view the course content, you can audit the course for free.
What is the refund policy?
If you subscribed, you get a 7-day free trial during which you can cancel at no penalty. After that, we don’t give refunds, but you can cancel your subscription at any time. See our full refund policy.
Is financial aid available?
Yes. In select learning programs, you can apply for financial aid or a scholarship if you can’t afford the enrollment fee. If fin aid or scholarship is available for your learning program selection, you’ll find a link to apply on the description page.
How much math do I need to know to take this course?
The only math that learners will need for this Specialization is arithmetic and basic concepts in logic.
This course was fun. How can I learn more?
If you enjoyed this course, we recommend Courses 1, 2 and 3 in the series!
If you would like to learn the fundamentals of computer science beyond the basics of programming, consider applying to the Master of Computer and Information and Technology (MCIT) at the University of Pennsylvania, an Ivy League computer science master’s program for people without a computer science background. For an on-campus experience, explore here. If you prefer an online setting, apply to MCIT Online. In fact, the lectures in this series are also used in the online degree program! The Specialization certificate will be viewed favorably by the admissions committee, so be sure to mention it when you apply.

More questions? Visit the Learner Help Center.

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Inheritance and Data Structures in Java

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